function popUp(url){

	var width 	= 640;
	var height 	= 480;
	var left 	= 40;
	var top 	= 50;
	
	var janela = window.open(url,'','width='+width+' , height='+height+', top='+top+', left='+left+', scrollbars=no,fullscreen=no');
}


function limparCampo(obj){
	document.getElementById(obj.id).value = "";
}